TABLE 1-26: Condition of U.S. Roadways by Functional System
TABLE 1-26: Condition of U.S. Roadways by Functional System
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RURAL | |||||||||||
| Interstates miles reported | 33,547 | 33,677 | 33,027 | 29,089 | 31,502 | 31,254 | 31,312 | 31,431 | 30,498 | 32,820 | 32,888 |
| Poor, percent | 8.7 | 7.6 | 5.2 | 7.0 | 6.5 | 6.3 | 3.9 | 3.6 | 4.1 | 2.4 | 2.1 |
| Mediocre, percent | b | b | 14.1 | 27.7 | 26.5 | 20.7 | 19.1 | 19.1 | 16.5 | 14.0 | 12.2 |
| Fair, percent | 31.9 | 31.7 | 17.4 | 20.9 | 23.9 | 22.3 | 21.7 | 20.7 | 17.8 | 18.1 | 16.9 |
| Good, percent | b | b | 27.6 | 36.1 | 33.2 | 36.9 | 38.8 | 41.0 | 42.6 | 44.0 | 44.8 |
| Very good, percent | 59.5 | 60.7 | 35.6 | 8.3 | 9.9 | 13.9 | 16.6 | 15.7 | 19.0 | 21.5 | 23.9 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reported | N | N | N | 3,563 | 955 | 1,326 | 1,508 | 1,382 | 2,313 | 153 | 162 |
| Other principal arterials miles reported | 83,802 | 85,729 | 94,798 | 78,296 | 89,506 | 89,265 | 92,103 | 92,170 | 93,333 | 97,247 | 97,284 |
| Poor, percent | 3.4 | 3.6 | 3.3 | 2.9 | 2.4 | 4.4 | 1.4 | 1.6 | 1.4 | 0.9 | 0.8 |
| Mediocre, percent | b | b | 5.9 | 9.2 | 8.2 | 7.6 | 5.8 | 4.9 | 4.6 | 3.7 | 3.2 |
| Fair, percent | 42.6 | 44.5 | 34.6 | 54.8 | 57.4 | 51.1 | 49.1 | 47.7 | 43.3 | 41.5 | 38.7 |
| Good, percent | b | b | 28.5 | 26.7 | 26.6 | 27.9 | 34.4 | R37.2 | 38.3 | 40.5 | 42.9 |
| Very good, percent | 53.8 | 51.9 | 27.6 | 6.4 | 5.4 | 9.0 | 9.3 | 8.6 | 12.3 | 13.5 | 14.4 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reported | N | N | N | 17,905 | 7,489 | 8,683 | 6,028 | 6,083 | 5,524 | 1,587 | 1,625 |
| Minor arterials miles reported | 144,735 | 142,866 | 137,637 | 134,837 | 124,877 | 121,443 | 126,381 | 126,525 | 130,591 | 135,192 | 136,092 |
| Poor, percent | 4.6 | 4.3 | 3.9 | 3.9 | 3.5 | 3.7 | 2.3 | 2.3 | 1.9 | 1.7 | 1.7 |
| Mediocre, percent | b | b | 7.1 | 9.1 | 10.5 | 9.0 | 8.2 | 6.7 | 6.0 | 5.2 | 5.3 |
| Fair, percent | 48.2 | 47.3 | 36.4 | 53.5 | 57.9 | 54.7 | 50.7 | 50.4 | 47.2 | 47.3 | 46.2 |
| Good, percent | b | b | 25.3 | 25.0 | 23.6 | 23.9 | 31.0 | 33.6 | 34.3 | 34.4 | 35.6 |
| Very good, percent | 47.2 | 48.4 | 26.8 | 8.5 | 4.5 | 8.7 | 7.7 | 7.0 | 10.6 | 11.4 | 11.2 |
| Unpaved, percent | - | - | N | N | N | N | N | N | N | N | N |
| Miles not reported | N | N | N | 12,740 | 13,294 | 15,708 | R10,978 | 10,978 | 6,664 | 1,968 | 1,227 |
| Major collectors miles reported | 436,365 | 436,737 | 434,175 | 432,223 | 431,111 | 431,712 | 432,117 | 386,122 | R171,134 | 163,544 | 388,485 |
| Poor, percent | 8.9 | 7.7 | 7.8 | 6.8 | 6.5 | 6.5 | 6.7 | 7.8 | R8.8 | 9.3 | 8.5 |
| Mediocre, percent | b | b | 11.0 | 12.4 | 11.3 | 11.4 | 10.3 | 12.3 | R13.0 | 12.1 | 12.7 |
| Fair, percent | 43.8 | 45.2 | 32.3 | 37.7 | 33.5 | 30.8 | R34.4 | 37.6 | R33.5 | 33.2 | 43.7 |
| Good, percent | b | b | 17.7 | 16.3 | 16.1 | 17.4 | 20.0 | 23.0 | R21.3 | 20.9 | 22.0 |
| Very good, percent | 36.2 | 36.1 | 20.4 | 15.9 | 21.9 | 23.7 | 18.4 | 19.3 | R23.4 | 24.5 | 13.2 |
| Unpaved, percent | 11.1 | 11.0 | 10.7 | 10.9 | 10.7 | 10.2 | 10.1 | N | N | N | N |
| Miles not reporteda | N | N | N | N | N | N | N | 2,402 | R217,566 | U | U |
| URBAN | |||||||||||
| Interstates miles reported | 11,527 | 11,603 | 12,466 | 10,738 | 12,338 | 12,307 | 12,430 | 12,477 | 12,231 | 13,109 | 13,139 |
| Poor, percent | 8.6 | 7.7 | 7.1 | 10.6 | 13.0 | 10.4 | 8.6 | 9.0 | 9.4 | 7.3 | 6.5 |
| Mediocre, percent | b | b | 13.2 | 30.9 | 29.9 | 26.8 | 28.3 | 27.0 | 25.5 | 23.1 | 21.7 |
| Fair, percent | 32.2 | 32.3 | 17.0 | 23.6 | 24.2 | 23.8 | 24.7 | 24.4 | 21.8 | 22.6 | 21.4 |
| Good, percent | b | b | 28.0 | 28.3 | 26.7 | 27.5 | 30.7 | 32.9 | 32.0 | 34.9 | 37.1 |
| Very good, percent | 59.1 | 60.0 | 34.7 | 6.5 | 6.2 | 11.4 | 7.6 | 6.7 | 11.4 | 12.0 | 13.3 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reported | N | N | N | 2,140 | 788 | 857 | 787 | 771 | 1,040 | 230 | 226 |
| Other freeways and expressway miles reported | 7,670 | 7,714 | 8,465 | 7,011 | 7,618 | 7,804 | 8,410 | 8,480 | 8,772 | 8,860 | 8,794 |
| Poor, percent | 2.2 | 2.3 | 2.6 | 3.8 | 5.3 | 4.8 | 3.4 | 3.3 | 3.2 | 2.6 | 2.8 |
| Mediocre, percent | b | b | 5.9 | 9.4 | 12.7 | 9.8 | 8.7 | 8.7 | 8.7 | 8.0 | 8.1 |
| Fair, percent | 43.9 | 44.2 | 32.4 | 60.6 | 58.1 | 54.7 | 54.7 | 58.5 | 54.3 | 53.6 | 50.6 |
| Good, percent | b | b | 28.1 | 22.7 | 20.9 | 20.4 | 26.3 | 25.2 | 27.1 | 30.0 | 31.6 |
| Very good, percent | 53.9 | 53.5 | 31.0 | 3.5 | 2.9 | 10.3 | 6.8 | 4.2 | 6.6 | 6.8 | 6.8 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reported | N | N | N | 1,846 | 1,377 | 1,166 | R617 | 579 | 397 | 281 | 355 |
| Other principal arterials miles reported | 51,987 | 52,349 | 52,165 | 30,337 | 38,598 | 41,444 | 44,498 | 45,009 | 44,886 | 48,045 | 47,797 |
| Poor, percent | 5.9 | 6.6 | 6.8 | 9.2 | 12.5 | 12.4 | 11.8 | 12.1 | 12.9 | 12.5 | 13.2 |
| Mediocre, percent | b | b | 11.5 | 13.3 | 16.3 | 14.7 | 14.1 | 14.6 | 18.5 | 18.1 | 16.8 |
| Fair, percent | 49.0 | 49.1 | 34.8 | 55.0 | 50.8 | 47.2 | 48.9 | 49.5 | 45.3 | 45.2 | 45.1 |
| Good, percent | b | b | 21.4 | 19.3 | 16.6 | 15.9 | 17.5 | 17.8 | 17.6 | 18.8 | 19.4 |
| Very good, percent | 45.1 | 44.3 | 25.3 | 3.3 | 3.8 | 9.7 | 7.7 | 6.0 | 5.8 | 5.4 | 5.4 |
| Unpaved, percent | N | N | N | N | N | N | N | N | N | N | N |
| Miles not reported | N | N | N | 22,498 | 14,492 | 11,352 | 8,485 | 8,209 | 8,246 | 5,154 | 5,518 |
| Minor arterials miles reported | 74,656 | 74,979 | 80,368 | 86,819 | 87,852 | 88,510 | 89,020 | 88,484 | R45,275 | 43,481 | 88,339 |
| Poor, percent | 8.9 | 7.4 | 7.9 | 7.9 | 6.7 | 6.7 | 6.9 | 7.2 | R5.7 | 5.8 | 10.0 |
| Mediocre, percent | b | b | 14.3 | 13.8 | 12.3 | 13.6 | 13.0 | 13.0 | 12.2 | 11.7 | 16.0 |
| Fair, percent | 48.5 | 49.9 | 34.1 | 40.2 | 38.1 | 36.9 | 37.9 | 37.9 | R36.0 | 35.3 | 39.8 |
| Good, percent | b | b | 19.2 | 18.4 | 20.5 | 20.4 | 20.7 | 21.4 | R22.1 | 20.5 | 16.9 |
| Very good, percent | 42.1 | 42.1 | 24.0 | 19.4 | 22.1 | 22.1 | 21.1 | 20.6 | R24.0 | 26.8 | 17.3 |
| Unpaved, percent | 0.5 | 0.6 | 0.5 | 0.4 | 0.3 | 0.3 | 0.4 | N | N | N | N |
| Miles not reportedb | N | N | N | N | N | N | N | 374 | R43,435 | U | U |
| Collectors miles reported | 78,248 | 77,097 | 82,657 | 84,856 | 86,098 | 87,331 | 87,790 | 86,666 | R53,806 | 52,002 | 86,026 |
| Poor, percent | 16.5 | 11.2 | 10.5 | 10.6 | 9.8 | 9.7 | 9.7 | 10.6 | R8.1 | 9.0 | 14.7 |
| Mediocre, percent | b | b | 16.9 | 16.8 | 16.2 | 16.8 | 16.6 | 16.0 | R12.8 | 13.0 | 17.4 |
| Fair, percent | 50.4 | 53.5 | 35.2 | 40.0 | 40.0 | 39.0 | 39.2 | 39.0 | R39.4 | 37.4 | 35.7 |
| Good, percent | b | b | 17.3 | 16.1 | 17.0 | 17.2 | 18.2 | 18.4 | R18.8 | 17.2 | 14.2 |
| Very good, percent | 31.7 | 34.2 | 19.1 | 15.5 | 16.0 | 16.6 | 15.4 | 15.9 | R20.9 | 23.4 | 18 |
| Unpaved, percent | 1.3 | 1.1 | 1.1 | 1.0 | 0.9 | 0.8 | 0.9 | N | N | N | N |
| Miles not reportedb | N | N | N | N | N | N | N | 663 | R32,921 | U | U |
KEY: N = data do not exist; R = revised; U = data are not available; - = value too small to report.
a The increase in miles not reported can be attributed to the fact that many states are electing to report pavement conditions by the more objective International Roughness Indicator (IRI) rather than by the Present Serviceability Rating (PSR), which has traditionally been used to determine pavement conditions for these systems.
b Included in row below.
NOTES
Because of the transition to a new indicator for pavement condition beginning with U.S. Department of Transportation, Federal Highway Administration (FHWA) data published in 1993, comparisons between pre-1993 data and 1993 and later data are difficult. Thus, trend comparisons should be made with care. For additional information, the reader is referred to the accuracy profile for this table in the appendix. Total mileage in this table will not match that in table 1-5 because of a change in the method of creating mileage-based tables derived from the Highway Performance Monitoring System, beginning with the 1997 issue of FHWA's Highway Statistics
Data are for the 50 states and the District of Columbia.
Numbers may not add to totals due to roundings.
SOURCES
1990-92: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual issues), table HM-63.
1993-98, 2000-01: Ibid., table HM-63 for rural major collector, urban minor arterial, and urban collector, and table HM-64 for all other categories.
1999: U.S. Department of Transportation, Federal Highway Administration, personal communication, June 5, 2002.